Demountable rim



A. MINNICK."

DEMOUNTABLE RIM.

APPLICATION FILED JAN-22, 19 9.

1,390,576. I PatentedSept. 13,1921.

mares STATES rarest QFFFEQE.

ALFRED MINN ICK, OF NEWARK, NEW JEBSEY, ASSIGNOR TO M-V' ALL WEATHERTRAIN CONTROLLER COMPANY, OF VTILMINGTOH, DELAWARE, A CORPORATION OFDELAWARE.

demountable rim for the the wheels of automobiles, motorcycles andsimilar vehicles for the purpose of facilitating the replacementoftires, the rim being of such construction that it may readily beengaged with and disengaged from thetire casing or shoe, and slipped onor off the wheel without the use of tools or loss of time, and itapplied to an I extra tire will retain its operative tire-holdingcondition indefinitely notwithstanding the vibration and jars incidentto travel. I

In the drawing, wherein preferred embodiment of the invention isillustrated,

Figure lis a side view of the rim; 7

Fig. 2 is a transverse section on the line 2-2 of Fig. 1;

Fig. 3 is a detail longitudinal section adjacent to the joint, closed.

Fig. t is a detail side view of the joint as seen when open.

Fig. 5 is a perspective view of the toggle lever, detached. I

Fig. 6 is a similar view of one end of the rim. p

Fig. 7 is a similar view of the other end of the rim.

The invention consists essentially in splitting or jointing the rim 10which may be of the flanged or clencher type shown or of any other ofthe forms adaptable to the various tires used on auto and similarvehicle wheels, the joint producing abutting or substantially contactingends or terminals 11 and 12 which may be beveled as shown and areadapted to be relatively deflected or moved out of alinement to permitthe rim to collapse, and a toggle lever, as shownin detail in Fig. 5,for expanding the rim and re-alining the terminals and locking themagainst displacement by the contractive force of the encircling tire.

As illustrated, the toggle lever, which may be utilized to eiiectthecollapsing as well as the expending of the rim, comprises anoperating member13 'tulcrumed at 14 to one DEMOUNTABLE RIM.

Specification of Letters Patent. Patented Sept. 13, 1921. Applicationfiie i January 22, 1919. Serial no. 272,551.

rim terminal and a link member 15 hit crumed at 16 to the other rimterminal and pivoted to the operating member at 17 The operating membermay, if found desirable,

be provided with an ofi'set 18 to form a l'101lS- mg for the linkmember, and as the operating member is' preferably com osed of par-,allel side arms, to operate, who lyoutside of but in contact with theopposite edges of the rim and are connected by cross-bars 19 and 2d,seats'2l and 22 may be formed in the rim, tor the reception respectively'of'said bars to constitute an auxillary locking means spondinglyduplicated or formed of coiiperto prevent accidental collapse of the rimand to-inaintain the rim terminals in alinement as toresist the tendencyof the contractile forceexerted by a tire to collapse the rim, residesin the toggle by reason of the location oft-he pivot point 17 outside ofa line connecting the pivot'points 14 and 16, to

thus constitute an eccentric-lock, the outward movement of the freeendof the lever 13 being limited as by the engagement of the cross-bar 20with the rim or the seat 22' therein. r

However, the breaking of the toggle is readily effectedto disaline therim terminals as by the applicationot toot pressure upon.

the operating member, for expanding the rim against the resistance ofthe tire after r the latter has been seated.

It will be obvious that a rim of the ordinary construction may readilybe converted into acollapsible rim, merely by cutting or splitting thesame at a convenient point to form terminals 11, 12and applying thetoggle lock, which may be separately produced for adaptation to rimsalready in use. special. construction of rim is not required in order toobtain the advantages of ready seating and unseating of tires, as aboveset .fortln and inthe event that the extra tire is carried on an extrademountable rim, the proper cond tion of the former, when required, isassured by the fact that accidental collapse or the rim by the vibrationor jarring oi the vehicle is effectually prevented.

Vv' hat is claimed is 2* 1. A demountable wheel-rim consisting of asplit ring having abutting terminals adapted for relative deflection,and a toggle lever having its pivotally connected mem bers respectivelypivoted to said terminals and occupying a position between the lines ofthe inner and outer peripheries of the rim when expanded. v

, A demountable wheel-rim consisting of a split ring having anunobstructed inner periphery and abutting terminals adapted for relativedeflection in the plane of the ring to P'tIllitll18 contraction thereof,and a toggle lever having operating and link members respectivelypivoted to said terminals for swinging movement parallel with the planeof the rim and arranged between the lines of the inner and outerperipheries of the rim When expanded.

3. A demountable wheel-rim consisting of a split ring having abuttingterminals adapted for relative deflection and a toggle lever havingpivotally connected operating and link members respectively connectedwith said terminals and adapted for normal arrangement between the linesof the inner and outer peripheries of the rim, the operating member andrim terminals having interlocking elements for engagement when theterminals are in abutting relation.

' l. A demountable wheel-rim consisting of a split ring having-terminalsmovable relatively to eliect the contraction and eXpansion of the rim,and a toggle having a par:

allel armed operating member pivotallymounted upon the edges of oneterminal and having an intermediate link connected'with the otherterminal, the former having a lateral offset for nesting the latter, andthe Ol'JQl'tttlllg' member being arranged between the inner and outerperipheries of the rim.

in testimony whereof I atlix my signature.

ALFRED Mmrnoie \Vitness: I

H. M. MAYHEW.

